![]() ![]() Process IDs could also give away attacks. For instance, a process that has been started from PowerShell with the execution bypass flag should be enough to raise suspicion. Monitoring how processes are started is something that cannot be overlooked. Once discovered, pinpoint the source and take it out.Īttackers will make heavy use of the command line, in some instances to launch malware. Default user agents used by tools such as PowerShell and Python are often an indication that something is not right. This is because attackers will often hurriedly attempt to download extra tools and scripts to use during an active attack. ![]() When hunting, be sure to be on the lookout for suspicious user agents. Look out for these, determine their origin and take out the attackers. ![]() Hosts responding with unusual failed PowerShell errors and program execution should serve as a warning that something is amiss. Attackers will leverage this to execute malware within the network. Many organizations make use of PowerShell daily to manage their IT infrastructure. The following are some common abnormal behaviors to look out for: Understanding said abnormal behavior (such as the ones discussed below) allows the hunter to target specific areas of high risk, effectively enabling the hunter to take out the adversary before detection. Such abnormal activities serve as red flags and we need to understand them. The adversary will often make small mistakes that lead to the discovery of their malicious actions. It has been said that it takes a thief to catch a thief, and this is not any different when hunting for threats in a system. Taking Time to Understand the Adversary Mindset ![]()
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